Dynamic range of frequency-selective response of high-T/sub c/ Josephson detector to millimeter-wave radiation

2001 ◽  
Vol 11 (1) ◽  
pp. 955-957 ◽  
Author(s):  
V. Shirotov ◽  
Y. Divin ◽  
K. Urban
Keyword(s):  
Millimeter Wave ◽  
Dynamic Range ◽  
Wave Radiation ◽  
Frequency Selective

Simulation of thermal processes in metamaterial millimeter-wave to infrared converter for millimeter-wave imager

2014 ◽  
Vol 05 (supp01) ◽  
pp. 1441009
Author(s):  
Peter S. Zagubisalo ◽  
Andrey G. Paulish ◽  
Sergey A. Kuznetsov
Keyword(s):  
Millimeter Wave ◽  
Dynamic Range ◽  
Wave Radiation ◽  
Thermal Processes ◽  
Image Detector ◽  
Ir Camera ◽  
Emissive Layer ◽  
Time Operation ◽  
Ir Emission ◽  
Mm Waves

The main characteristics of millimeter-wave (MM-wave) image detector were simulated by means of accurate numerical modeling of thermophysical processes in a metamaterial MM-to-IR converter. The converter represents a multilayer structure consisting of an ultra thin resonant metamaterial absorber and a perfect emissive layer. The absorber consists of a dielectric self-supporting film that is metallized from both sides. A micro-pattern is fabricated from one side. Resonant absorption of the MM waves induces the converter heating that yields enhancement of IR emission from the emissive layer. IR emission is detected by IR camera. In this contribution an accurate numerical model for simulation of the thermal processes in the converter structure was created by using COMSOL Multiphysics software. The simulation results are in a good agreement with experimental results that validates the model. The simulation shows that the real-time operation is provided for the converter thickness less than 3 μm and time response can be improved by decreasing of the converter thickness. The energy conversion efficiency of MM waves into IR radiation is over 80%. The converter temperature increase is a linear function of a MM-wave radiation power within three orders of the dynamic range. The blooming effect and ways of its reducing are also discussed. The model allows us to choose the ways of converter structure optimization and improvement of image detector parameters.

Analysis of Shadow in Passive Millimeter-Wave Radiation Image

2020 ◽  
Author(s):  
Fangzhou Tang ◽  
Liangqi Gui ◽  
Kaixin Deng ◽  
Ziwei Li ◽  
Ke Chen ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Wave Radiation

Observation of millimeter-wave radiation generated by the interaction between an electron beam and a photonic crystal

2004 ◽  
Vol 69 (4) ◽  
Author(s):  
K. Yamamoto ◽  
R. Sakakibara ◽  
S. Yano ◽  
Y. Segawa ◽  
Y. Shibata ◽  
...  
Keyword(s):  
Electron Beam ◽  
Photonic Crystal ◽  
Millimeter Wave ◽  
Wave Radiation

Generation of millimeter-wave radiation by means of a Smith-Purcell free-electron laser

1981 ◽  
Vol 24 (2) ◽  
pp. 1150-1153 ◽  
Author(s):  
Donald E. Wortman ◽  
Richard P. Leavitt ◽  
Herbert Dropkin ◽  
Clyde A. Morrison
Keyword(s):  
Millimeter Wave ◽  
Free Electron ◽  
Free Electron Laser ◽  
Wave Radiation
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